MediaWiki spam protection

Thanks to a couple of brave spammers, most MediaWiki admins are aware of the utter lack of spam protection MediaWiki has out of the box. Thanks to the "wiki philosophy" of open editing.. MediaWiki is completely open to attack by default.

However, several straightforward steps can help protect a wiki.

See also:

.htaccess has some methods for blocking things like blank user agents or IP ranges.